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Small green circuit board with a single USB port visible

DELL

DELL Chromebook 3120 USB IO Circuit Board M90DT

SKU CH-0F2X-AA9J7

Replacement USB I/O circuit board for the Dell Chromebook 11 3120 (2015), part M90DT

  • ProcessorLaptop-computer-replacement-parts
  • Genuine Dell OEM replacement part for Chromebook 3120
  • Restores a single USB port on the 11-inch laptop
  • Direct motherboard connection via M90DT databoard design
  • Compatible with 2015 Chromebook 11 (3120) models
  • Exact component pictured ships ready for installation

Genuine Dell OEM USB I/O Board for Chromebook 3120

This is a genuine Dell OEM replacement part for the Chromebook 11 3120 laptop. It serves as the USB I/O circuit board, also known as a databoard, housing a single USB port. The component connects directly to the system motherboard. It is intended for technicians repairing this specific 2015 model.

Single USB port I/O connectivity

The board provides exactly one USB port for peripheral connectivity. This specification determines whether the part matches the physical port layout required by the chassis. The DPN M90DT and alternate part number DA0ZM8PI6D0 confirm the exact electrical and mechanical interface. No other interfaces or port counts are present on this module.

Repairs USB port failure on Chromebook 3120

This part comfortably handles the restoration of a damaged or non-functional USB port on the compatible laptop. It runs out when the fault lies elsewhere on the motherboard or when multiple ports are required. Buyers needing repair for other Chromebook models or different port configurations cannot use this board.

How it compares

Measured against everything we stock in Motherboard Add-On Parts, at today’s prices. Recalculated every night.

Price $6.99
Cheaper than about 90% of the 242 comparable items (median $50.49).

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Specifications

Product
Brand nameDELL
Processor
ProcessorLaptop-computer-replacement-parts

Questions about this item

What does the single USB port on this IO board actually provide when the board is installed in a Chromebook 3120?

It restores one functional USB connection on the left side of the Chromebook 11 3120 so peripherals such as a mouse or flash drive can be used again.

Which interface standard does the board use to link with the Chromebook 11 3120 motherboard?

The board connects through its dedicated internal connector to the Chromebook 11 3120 motherboard, carrying the USB signal and power lines required for the external port.

What physical space and mounting points does the board need inside the Chromebook 3120 chassis?

It fits the original IO board cut-out on the left edge of the Chromebook 11 3120 and secures with the existing screw holes used by the factory part.

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